Cotton-gin rib



, (No ModeL) T. G. GARLINGTON.

COTTON GIN RIB.

No..268,007. PatentedNpv. 28, 1882;

UNITED. STATES PAT NT OFFICE.

THOMAS C. GARLINGT'ON, or DADEVILLE, ALABAMA.

COTTON-GIN RIB.

SPECIFICATION forming part of Letters Patent No. 268,007, dated November28, 1882.

' Application filedMay 6,1882. (No model.)

To all whom it may concern:

Be it known that I, THOMAS C. GARLING- TON, a citizen of the UnitedStates,residing at Dadeville, in the county of Tallapoosa and State ofAlabama, have invented certain new thereof most subjected towear-thatis, at the upper end of the rib, where the cotton is drawn through bythe saws.

Several expedients have been resorted to for securing attachablewearing-plates of steel to cotton-gin ribs, such as rivets, screws, anddovetail recesses 5 but the devices used have either been too expensive,making the repair of a worn rib cost more than a new one, or else themethod employed for attaching the plates has materially weakened the ribat the point where strength is specially required. If the plateisattached by screws they are liable to rust, and often break when anattempt is made to unscrew them to remove the plate. Rivets are alsodifficult to remove.

My invention is designed to obviate the disadvantages above recited; andit consists essentially in obtaining a firm and intimate connectionbetween the wearing-plate and rib by means of fusible metal poured intoholes or channels in the rib and plate, as will hereinafter he morefully described.

In the drawings, Figure 1 is a face view of a cotton-gin rib having ahard-metal plate let into the same and secured by fusible metal. Fig. 2is a sectional view taken through the plate and rib on line m .70 ofFig. ,1. Fig. 3 is an edge view of the rib. Fig. 4:is a face view,illustrating a modification, showing the means for applying awearing-plate to a gin-rib already in use orin a manufactured state.Fig. 5 is a section taken through Fig. 4 on line yy. Fig. 6 is adetailed view of the attachable plate for repairing a worn rib. Fig. 7is crosssection through line 2 z of Fig. 1.

Referring to the construction exemplified in Figs.1and3,inclusive,andFig.7,Adesignates a cotton-gin rib of any approved formor construction, which is provided with the customary end holes for thepassage of the screws that serve. to secure the rib to the breast of thegin. A dovetail recess or groove, B, made near the upper end of the ribat the time of manufacture or casting of the rib, has a series ofshallow recesses or depressions or a continuous channel or groove, a, inits bottom face, for the object hereinafter stated.

O designates the wearing or re-enforcing plate, which is made of steelor other hard metal, and has the top and bottom edges beveled to fitinto the dovetail recesses in the rib. The face of the plate is flushwith the face of the rib, and the side edges of the plate projectslightly beyond the rib, which will lessen the draft and improve thestaple. A hole, d, is drilled through the middle of the plate 0, andnotches c are made in the top and bottom edges of the latter, as isclearly shown in Fig.1. The object of the hole d is to permit thepouring in or introduction of molten metalsuch as lead or itsalloyswhich metal will find its way illto the depressions or cavities,or the channel in the rib and notches and hole in the plate, and whenhard will make a firm and intimate connection between the rib and plate.In or-. der to remove the plate, when worn, for the insertion of a newone, it is only necessary to hold the rib over a hot fire, when, thefastening metal being easily fusible, the plate is readily removed. Itwill be obvious that a firm adhesion between the plate and rib can onlybe obtained by using a proper solderingflux. The construction shown inFigs. 4, 5, and 6 also involves the use of a plug of fusible metal forfastening the plate to the rib. In this instance, however, the rib is ofthe wellknown form, having a hardened or chilled face at the point wherethe cotton isdrawn through by the saws. Such a face, when worn out, isrepaired by securing thereto a wearingplate in the following manner,viz: Notches fare made at each side of the rib by means of acorneredfileor saw, these notches extending below the hardened face of therib,'and divergrcc ing from a central point on the face thereof, so as,to leave a projection, g. The wearing-plate G is provided with a forkedend, h, which is made to fit into the aforesaid notches and onto theprojection g, and the opposite end, i, of the plate is turned downslightly, or beveled, so as to fit into an undercut notch,j, extendingacross the face of the rib. The plate having been applied in thismanner, a hole is drilled through it and the rib and countersunk on eachside of the latter. This hole is filled with molten metal after theparts have been properly prepared with the solderin g-fluid, this metal,when hard, forming a plug for retaining the plate in position. The holeneed not extend entirely through the rib, and it can be made slanting.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A cotton-gin rib having an attachable and detachable wearing orre-enforcing plate secured to the rib by a fusible metal plug orfilling, as and for the purpose set forth.

2. The attachable and detachable wearing or re-enforcing plate, havingone end forked and. the other end turned down or beveled, and providedwith a hole in its face, in combination with the gin-rib having sidenotches and central projection, a transverse undercut groove and holecoinciding with the hole in the plate, for receiving a plug of fusiblemetal, as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS C. GARLINGTON.

Witnesses GLovER TRENT, P. G. TRENT.

